Planes with Ukraine bodies arrive in Netherlands

People look at pictures of the victims of the Malaysian Airlines crash at a memorial built in a central square in Kharkiv, Ukraine.

People look at pictures of the victims of the Malaysian Airlines...

KHARKIV, Ukraine — Two military aircraft carrying human remains from the Malaysian plane disaster arrived in the Netherlands, while Australian and Dutch diplomats joined to promote a plan for a U.N. team to secure the crash site, which is controlled by pro-Russian rebels.

All 298 people aboard Malaysia Airlines Flight 17, most of them Dutch citizens, were killed when the plane was shot down on July 17. U.S. officials say the Boeing 777 was probably shot down by a missile from territory held by pro-Russian rebels, likely by accident.

Australian Prime Minister Tony Abbott, who says he fears some remains will never be recovered unless security is tightened, has proposed a multinational force mounted by countries such as Australia, the Netherlands and Malaysia.

To that end, Abbott said Thursday he had dispatched 50 police officers to London to be ready to join any organization that may result.

Australia's Foreign Minister Julie Bishop was traveling with her Dutch counterpart, Frans Timmermans, to Kiev to seek an agreement with the Ukraine to allow international police to secure the wreckage, Abbott said.